lumpy idle..no fault codes....what things can i check?

cars has had lumpy idle for some time now.its starting to get a little bit worse now.i was guna try cleaning the maf sensor and also maybey change the temperature coolant sensor as this aperantly doesnt always show fault code. any other ideas people?iv had the throttle cleaned and reset aswell.didnt help.

Useful Searches

About US

Our community has been around for many years and pride ourselves on offering unbiased, critical discussion among people of all different backgrounds. We are working every day to make sure our community is one of the best.